Watson-Marlow 323Du User Manual

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 1

WATSON-MARLOW BREDEL MANUALS

Watson-Marlow 323E, 323S,
323U and 323Du pumps

m-323e-s-u-du-gb-06

Contents

1 Declaration of conformity 2
2 Declaration of incorporation 2
3 Two-year warranty 3
4 When you unpack your pump 4
5 Information for returning pumps 5
6 Peristaltic pumps: an overview 6
7 Safety notes 7
8 Pump specifications 9

8.1 Pump features 9

8.2 Dimensions 14

9 Good pump installation practice 15

9.1 General recommendations 15

9.2 Do’s and do not’s 16

10 Connecting this product to a

power supply 17
11 Start-up check list 18
12 Switching the pump on 18
13 Auto-restart facility 19
14 Manual operation 20
15 Keypad lock 21
16 MemoDose 22
17 Automatic operation with

analogue signals, remote

control or RS232 link 23

17.1 Analogue signals and
remote control 24

17.2 Automatic control wiring
using the 720N module 26

18 Care and maintenance 28
19 Troubleshooting 28

19.1 Error messages 29

20 Drive maintenance 30
21 Drive part numbers 30
22 Drive spares 31
23 Pumpheads 32

23.1 Pumpheads: key safety
information 32

23.2 313D and 314D
pumpheads 32

23.3 313D and 314D
pumphead order codes 34

23.4 313D and 314D flow rates 35

23.5 313D and 314D:
maximum number of
pumpheads 36

23.6 313D and 314D:
tubing part numbers 37

23.7 314MC and 318MC
microcassette pumpheads 38

23.8 314MC and 318MC
microcassette pumphead
spares 40

23.9 314MC and 318MC
flow rates 41

23.10 314MC and 318MC
tubing part numbers 42

23.11 501RL pumphead 43

23.12 501RL and 501RL2
installation 43

23.13 501RL and 501RL2
tube loading 43

23.14 501RL and 501RL2
rotor settings 44

23.15 501RL and 501RL2
pumphead spares 45

23.16 501RL and 501RL2
flow rates 46

23.17 501RL and 501RL2
tubing part numbers 46

24 Trademarks 47
25 Warning not to use pumps in

patient-connected applications 47
26 Publication history 47
27 Decontamination certificate 48

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 2

1 Declaration of conformity

This declaration was issued for Watson-Marlow 323E, 323S, 323U and
323Du pumps on November 1, 2007. When this pump unit is used as a
stand-alone pump it complies with: Machinery Directive 2006/42/EC, EMC
Directive 2004/108/EC.

This pump is ETL listed: ETL control number 3050250. Cert to CAN/CSAstd
C22.2 No 61010-1. Conforms to UL std 61010A-1.

See 8 Pump specifications.

2 Declaration of incorporation

When this pump unit is to be installed into a machine or is to be assembled with other
machines for installations, it must not be put into service until the relevant machin­ery has been declared in conformity with the Machinery Directive 2006/42/EC.

Responsible person: Christopher Gadsden, Managing Director, Watson-Marlow Lim­ited, Falmouth, Cornwall TR11 4RU, England. Telephone [phone] Fax
[phone].

The information in this user guide is believed to be correct at the time of publication.
However, Watson-Marlow Limited accepts no liability for errors or omissions. Watson­Marlow Bredel has a policy of continuous product improvement, and reserves the
right to alter specifications without notice. This manual is intended for use only with
the pump it was issued with. Earlier or later models may differ. The most up-to-date
manuals appear on the Watson-Marlow website: http://www.watson-marlow.com

E, S, U, Du

E, S, U, Du

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 3

E, S, U, Du 3 Two-year warranty

Watson-Marlow Limited ("Watson-Marlow") warrants, subject to the conditions and
exceptions below, through either Watson-Marlow, its subsidiaries, or its authorised
distributors, to repair or replace free of charge, any part of the product which fails
within two years of the day of manufacture of the product. Such failure must have oc­curred because of defect in material or workmanship and not as a result of operation
of the product other than in normal operation as defined in this pump manual.

Watson-Marlow shall not be liable for any loss, damage, or expense directly or indi­rectly related to or arising out of the use of its products, including damage or injury
caused to other products, machinery, buildings, or property, and Watson-Marlow shall
not be liable for consequential damages, including, without limitation, lost profits,
loss of time, inconvenience, loss of product being pumped, and loss of production.
This warranty does not obligate Watson-Marlow to bear any costs of removal, instal­lation, transportation, or other charges which may arise in connection with a war­ranty claim.

Conditions of and specific exceptions to the above warranty are:

Conditions

 Products must be returned by pre-arrangement, carriage-paid, to Watson-Mar-

low, or a Watson-Marlow approved service centre.

 All repairs or modifications must have been made by Watson-Marlow Limited, or

a Watson-Marlow approved service centre or with the express permission of
Watson-Marlow.

 Warranties purporting to be on behalf of Watson-Marlow made by any person,

including representatives of Watson-Marlow, its subsidiaries, or its distributors,
which do not accord with the terms of this warranty shall not be binding upon
Watson-Marlow unless expressly approved in writing by a Director or Manager of
Watson-Marlow.

Exceptions

 The warranty shall not apply to repairs or service necessitated by normal wear

and tear or for lack of reasonable and proper maintenance.

 All tubing and pumping elements as consumable items are excluded.
 Products which, in the judgment of Watson-Marlow, have been abused, misused,

or subjected to malicious or accidental damage or neglect are excluded.

 Electrical surge as a cause of failure is excluded.
 Chemical attack is excluded
 All pumphead rollers are excluded.
 Pumpheads from the 313/314 retain their one-year standard pumphead war-

ranty. The drive they are attached to is subject to the two-year warranty as set
out here.

 Ancillaries such as leak detectors are excluded.

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 4

E, S, U, Du 4 When you unpack your pump

Unpack all parts carefully, retaining the packaging until you are sure all components
are present and in good order. Check against the components supplied list, below.

Packaging disposal

Dispose of packaging materials safely, and in accordance with regulations in your
area. The outer carton is made of corrugated cardboard and can be recycled.

Inspection

Check that all components are present. Inspect components for damage in transit. If
anything is missing or damaged, contact your distributor immediately.

Components supplied

Watson-Marlow 323E, 323S, 323U and 323Du pumps are supplied as:

 Dedicated 323E, 323S, 323U or 323Du pump drive unit fitted with one or more

313 or 314 pumpheads (see 8 Pump specifications).

 The designated mains power lead for your pump
 PC-readable CDROM containing these operating instructions
 Quick Start manual

Note: Some versions of this product will include components different from those
listed above. Check against your purchase order.

Storage

This product has an extended shelf life. However, care should be taken after storage
to ensure that all parts function correctly. Users should be aware that the pump con­tains a battery with an unused life of seven years. Long-term storage is not recom­mended for peristaltic pump tubing. Please observe the storage recommendations
and use-by dates which apply to tubing you may wish to bring into service after stor­age.

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 5

E, S, U, Du 5 Information for returning pumps

Equipment which has been contaminated with, or exposed to, body fluids, toxic chem­icals or any other substance hazardous to health must be decontaminated before it
is returned to Watson-Marlow or its distributor.

A certificate included at the rear of these operating instructions, or signed statement,
must be attached to the outside of the shipping carton. This certificate is required
even if the pump is unused. See 27 Decontamination certificate.

If the pump has been used, the fluids that have been in contact with the pump and
the cleaning procedure must be specified along with a statement that the equipment
has been decontaminated.

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 6

E, S, U, Du 6 Peristaltic pumps - an overview

Peristaltic pumps are the simplest pump, with no valves, seals or glands to clog or
corrode. The fluid contacts only the bore of a tube, eliminating the risk of the pump
contaminating the fluid, or the fluid contaminating the pump. Peristaltic pumps can
run dry.

How they work

A compressible tube is squeezed between a roller and a track on an arc of a circle,
creating a seal at the point of contact. As the roller advances along the tube, the seal
also advances. After the roller has passed, the tube returns to its original shape, cre­ating a partial vacuum which is filled by fluid drawn from the inlet port.

Before the roller reaches the end of the track, a second roller compresses the tube
at the start of the track, isolating a packet of fluid between the compression points.
As the first roller leaves the track, the second continues to advance, expelling the
packet of fluid through the pump’s discharge port. At the same time, a new partial
vacuum is created behind the second roller into which more fluid is drawn from the
inlet port.

Backflow and siphoning do not occur, and the pump effectively seals the tube when
it is inactive. No valves are needed.

The principle may be demonstrated by squeezing a soft tube between thumb and fin­ger and sliding it along: fluid is expelled from one end of the tube while more is drawn
in at the other.

Animal digestive tracts function in a similar way.

Suitable applications

Peristaltic pumping is ideal for most fluids, including viscous, shear-sensitive, corro­sive and abrasive fluids, and those containing suspended solids. They are especially
useful for pumping operations where hygiene is important.

Peristaltic pumps operate on the positive displacement principle. They are particularly
suitable for metering, dosing and dispensing applications. Pumps are easy to install,
simple to operate and inexpensive to maintain.

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 7

E, S, U, Du 7 Safety notes

In the interests of safety, this pump and the tubing selected should only be used by
competent, suitably trained personnel after they have read and understood this man­ual, and considered any hazard involved. If the pump is used in a manner not spec­ified by Watson-Marlow Limited, the protection provided by the pump may be
impaired.

This symbol, used on the pump and in this manual,
means: Caution, refer to accompanying documents.

This symbol, used on the pump and in this manual,
means: Do not allow fingers to contact moving parts.

This symbol, used on the pump and in this manual,
means: Recycle this product under the terms of the EU
Waste Electrical and Electronic Equipment (WEEE) Di­rective.

Fundamental work with regard to lifting, trans­portation, installation, starting-up, maintenance

and repair should be performed by qualified per­sonnel only. The unit must be isolated from mains power while
work is being carried out.

Any person who is involved in the installation or periodic maintenance of this equip­ment should be suitably skilled or instructed and supervised using a safe system of
work. In the UK this person should also be familiar with the Health and Safety at
Work Act 1974.

There is a user-replaceable type T1.0AH 250V fuse

in the fuse drawer of the IEC mains connector at

the back of the pump, which also contains a spare

fuse. In some countries, the mains power plug
contains an additional replaceable fuse. There are no user-ser­viceable fuses or parts inside this pump.

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 8

There are moving parts inside the pumphead. Before opening the track, en­sure that the following safety directions are followed.

 Ensure that the pump is isolated from the mains power.
 Ensure that there is no pressure in the pipeline.
 If a tube failure has occurred, ensure that any fluid in the pumphead has been

allowed to drain to a suitable vessel, container or drain.

 Ensure that protective clothing and eye protection are worn if hazardous fluids

are pumped.

 Primary operator protection from rotating parts of the pump is provided by the

pumphead track. See 23 Pumpheads.

This product does not comply with the ATEX directive
and must not be used in explosive atmospheres.

This pump must be used only for its intended purpose. The pump must be accessible
at all times to facilitate operation and maintenance. Access points must not be ob­structed or blocked. The pump’s mains plug is the disconnecting device (for isolating
the motor drive from the mains supply in an emergency). Do not position the pump
so that it is difficult to disconnect the mains plug. Do not fit any devices to the drive
unit other than those tested and approved by Watson-Marlow. Doing so could lead to
injury to persons or damage to property for which no liability can be accepted.

If hazardous fluids are to be pumped, safety procedures specific to the particular fluid
and application must be put in place to protect against injury to persons.

The exterior surfaces of the pump may get hot during operation. Do not take hold of
the pump while it is running. Let it cool after use before handling it.

No attempt should be made to run the drive without a pumphead fitted.

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 9

E, S, U, Du 8 Pump specifications

Labels fixed to the rear of the pump contain manufacturer and contact details,
product reference number, serial number and model details.

Features 323E 323S 323U 323Du

Manual control • • • •
Backlight • • • •
Beeper • • • •
Manual screen: rpm • • • •
15-400 rpm 27:1 speed control •
3-400 rpm 133:1 speed control • • •

1.5-220 rpm 147:1 speed control • • •
5 rpm scrolling increment •
1 rpm scrolling increment • • •
Auto-restart • • •
Keypad lock • • •
MemoDose • • •
Analogue input: 4-20mA, 0-10V • •
Remote stop/start control • •
Remote direction control • •
RS232 control •
313D and 314D pumpheads • • • •
501RL and 501RL2 pumpheads • • •
314MC and 318MC pumpheads • • •
~100-120V/~220-240V operation • • • •
IP31 wipe-down case • • • •

8.1 Pump features

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 10

15-400 rpm 3-400 rpm

Four models of 323 drives are documented in this manual: 323E, 323S, 323U and
323Du, with varying functionality, as described earlier in this section. The 323E is fit­ted with a short-nosed gearbox, offers 15-400 rpm, and can be fitted with a 313 or
314 pumphead. The 323S, 323U and 323Du are available with a choice of gearboxes:
a short-nosed gearbox, which offers 3-400 rpm and can be fitted with a 313 or 314
pumphead, or a 314MC or a 318MC pumphead; and a long-nosed gearbox, which of­fers 1.5-220 rpm and can be fitted with a 501RL or a 501RL2 pumphead. See 23
Pumpheads.

323S, 323U, 323Du

1.5-220 rpm

323E

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 11

IP

NEMA

1st Digit 2nd Digit

3

Protected against
ingress of solid objects
with a diameter of
more than 2.5mm.
Tools, wires etc with a
thickness of more than

2.5mm are prevented
from approach

1

Protection against
dripping water falling
vertically. No harmful
effect must be
produced

2

Indoor use to provide a
degree of protection
against limited
amounts of falling
water and dirt

5

Protected against
harmful dust deposits.
Ingress of dust is not
totally prevented but
the dust must not
enter in sufficient
quantity to interfere
with satisfactory
operation of the
equipment. Complete
protection against
contact

5

Protection against
water projected from a
nozzle against the
equipment (enclosure)
from any direction.
There must be no
harmful effect (water
jet)

12

Indoor use to provide a
degree of protection
against dust, falling
dirt and dripping, non­corrosive liquids

13

Indoor use to provide a
degree of protection
against dust and spray­ing of water, oil and
non-corrosive coolants

6

Protection against
ingress of dust (dust­tight). Complete
protection against
contact

6

Protection against
heavy seas or powerful
water jets. Water must
not enter the
equipment (enclosure)
in harmful quantities
(splashing over)

4X

Indoor or outdoor use*
to provide a degree of
protection against
splashing water, wind­blown dust and rain,
hose-directed water;
undamaged by the
formation of ice on the
enclosure. (Resist
corrosion: 200-hour
salt spray)

IP (Ingress Protection) and NEMA definitions

* Protect from prolonged UV exposure.

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 12

Supply voltage/frequency 100-120V/200-240V 50/60Hz 1ph

Maximum voltage fluctuation

±10% of nominal voltage. A well

regulated electrical mains supply is re-

quired along with cable connections con-

forming to the best practice of noise

immunity

Installation category
(overvoltage category)

II

Power consumption 100VA

Full load current <0.43A at 230V; <0.86A at 115V

Eprom version Accessible through pump software

Enclosure rating

IP31 to BS EN 60529; Equivalent to

NEMA 2. Suitable for indoor use. Pro-

tected against dripping water and falling

dirt. May be wiped with a damp cloth but

should not be immersed

Operating temperature range 4C to 40C, 40F to 104F

Storage temperature range -40C to 70C, -40F to 158F

Maximum altitude 2,000m, 6,560ft

Humidity (non-condensing)

80% up to 31C, 88F, decreasing

linearly to 50% at 40C, 104F

Weight See 8.2 Dimensions

Noise <70dB(A) at 1m

Pump specifications

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 13

EC
harmonised
standards

Safety of machinery—electrical equipment of machines:

BS EN 60204-1

Safety requirements for electrical equipment for

measurement, control and laboratory use:

BS EN 61010-1 incorporating A2 Category 2, Pollution degree 2

Degrees of protection provided by enclosures (IP code):

BS EN 60529 amendments 1 and 2

Conducted emissions:

BS EN 55011 A1 and A2, Class A, called by BS EN 61000-6-4

Radiated emissions:

BS EN 55011 A1 and A2, Class A, called by BS EN 61000-6-4

Electrostatic discharge: BS EN 61000-4-2

Radiated RF immunity:

BS EN 61000-4-3 A1 and A2, called by BS EN 61000-6-2

Fast transient burst:

BS EN 61000-4-4 A1 and A2, Level 3 (2kV),

called by BS EN 61000-6-2

Surge immunity:

BS EN 61000-4-5 A1 and A2, called by BS EN 61000-6-2

Conducted RF immunity:

BS EN 61000-4-6, called by BS EN 61000-6-2

Voltage dips and interruptions:

BS EN 61000-4-11, called by BS EN 61000-6-2

Mains harmonics: BS EN 61000-3-2 A2

Pumps and pump units for liquids—common safety

requirements: BS EN 809

Other
standards

UL 61010A-1

CAN/CSA-C22.2 No 61010-1

Conducted emissions FCC 47CFR, Part 15.107

Radiated emissions FCC 47CFR, Part 15

NEMA 2

Standards

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 14

8.2 Dimensions in millimetres

323E/D, 323S/D, 323U/D, 323Du/D

323S/MC, 323U/MC, 323Du/MC

323S/RL, 323U/RL, 323Du/RL

Drive only + 313 + 501RL

323 4.2kg, 9lb 4oz 4.5kg, 9lb 14oz 5.5kg, 12lb 2oz

Unit weights

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 15

E, S, U, Du 9 Good pump installation practice

9.1 General recommendations

Position

A correctly engineered installation will promote long tube life. Site the pump on a
flat, horizontal, rigid surface, free from excessive vibration. Allow a flow of air around
the pump to ensure that heat can be dissipated. Ensure that the temperature around
the pump does not exceed 40C.

Emergency disconnection

The pump’s mains plug is the disconnecting device (for isolating the motor drive from
the mains supply in an emergency). Do not position the pump so that it is
difficult to disconnect the mains plug. The STOP key on the keypad will always stop
the pump. However, it is recommended that a suitable local emergency stop device
is fitted into the mains supply to the pump.

Valves

Peristaltic pumps are self-priming and self-sealing against backflow. No valves are
required in inlet or discharge lines. Valves in the process flow must be opened before
the pump operates. Users are advised to fit a pressure relief device between the pump
and any valve on the discharge side of the pump to protect against damage caused
by accidental operation with the discharge valve closed.

The pump may be set up so that the direction of rotor rotation is clockwise or
counter-clockwise, whichever is convenient.

Tubing materials: run-in advice

Sta-Pure and Marprene tubing are hard to compress when new. When using
tubing made of these materials, the first 30 seconds should be at a speed of 10 rpm
or greater. If the pump is run slower, the safety system built into pump drive’s soft­ware may cause it to stop and display an over-current error message.

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 16

9.2 Do’s and do not’s

Do operate the pump on a flat horizontal surface. The pump requires a free flow of

air for cooling. Do not block the air vents beneath the pump or at the rear.

Do not stack pumps more than three high.

Do use only single phase mains electricity supplies.

Do keep delivery and suction tubes as short and direct as possible - though ideally

not shorter than 1m - and follow the straightest route. Use bends of large radius: at
least four times the tubing diameter. Ensure that connecting pipework and fittings
are suitably rated to handle the predicted pipeline pressure. Avoid pipe reducers and
lengths of smaller bore tubing than the pumphead section, particularly in pipelines on
the suction side. When pumping viscous fluids use pipe runs with a bore several times
larger than the pump tube. Any valves in the pipeline (not usually needed) must not
restrict the flow. Any valves in the flow line must be open when the pump is running.

Do ensure that on longer tube runs at least 1m of smooth bore flexible tubing is con­nected to the inlet and discharge port of the pumphead to help to minimize impulse
losses and pulsation in the pipeline. This is especially important with viscous fluids and
when connecting to rigid pipework.

Do site the pump at or just below the level of the fluid to be pumped if possible. This
will ensure flooded suction.

Do keep the pumphead track and all moving parts clean and free from contamina­tion and debris.

Do run at slow speed when pumping viscous fluids. Flooded suction will enhance
pumping performance in all cases, particularly for materials of a viscous nature.

Do recalibrate after changing pump tubes, fluid, or any connecting pipework. It is
also recommended that the pump is recalibrated periodically to maintain accuracy.

When using Marprene or Bioprene continuous tubing, do re-tension the tube after
the first 30 minutes of running.

Tube selection: The chemical compatibility lists published in Watson-Marlow publica­tions are guides. If in doubt about the compatibility of a tube material and the duty
fluid, request a Watson-Marlow tube sample card for immersion trials.

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 17

We recommend using commercially available supply
voltage surge suppression where there is excessive elec­trical noise.

E, S, U, Du 10 Connecting this product

to a power supply

A well regulated electrical mains supply is required along with cable connections con­forming to the best practice of noise immunity. It is not recommended to site these
drives alongside “dirty” electrical mains supplies such as 3-phase contactors and in­ductive heaters without special attention being paid to unacceptable mains-borne
noise.

The voltage selector is mounted in the switchplate at the rear of
the pump. Set the voltage selector to 115V for 100-120V
50/60Hz supplies or 230V for 200-240V 50/60Hz supplies. Al­ways check the voltage selector switch before connecting the
mains supply. Make suitable connection to an earthed, single­phase mains electricity supply. To comply with Safety Standards,

the mains plug must be a separable plug (not a locking type).

Input line fusing: type T1.0AH 250V 20mm time-delayed cartridge fuse, located in
the combined mains IEC inlet socket and fuse drawer at the rear of the pump.

Note: A spare fuse is also provided in the drawer.

Conductor coding

European North American

live brown black

neutral blue white

ground green/yellow green

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 18

E, S, U, Du

E, S, U, Du 12 Switching the pump on

 Switch on the power supply at the rear of the pump. The pump runs a power-on

test to confirm proper functioning of the memory and hardware. If a fault is
found, an error message is displayed. See 19 Error messages.

 If the pump starts running look for the ! symbol on the display. This ! symbol in-

dicates that the pump is set for auto-restart. Press the STOP key if you need to
stop the pump

11 Start-up check list

 Ensure that proper connections are achieved between the pump tube and

suction and discharge piping.

 Ensure proper connection has been made to a suitable power supply.
 Ensure that the recommendations in section 9 Good pump installation practice

are followed.

 Check the position of the voltage selector switch
 Check the mains power switch at the rear of the pump
 Check the fuse in the mains inlet socket at the rear of the pump
 Ensure that the mains IEC plug is correctly fitted in the mains IEC inlet socket

First-time start-up defaults

323E 323S 323U 323Du

Direction Clockwise Clockwise Clockwise Clockwise

Pumphead, 400
Pumphead, 220

313 313

501RL

313

501RL

313

501RL

Keypad lock Off Off Off

Auto-restart Off Off Off

Pump status Stopped Stopped Stopped Stopped

Remote stop Open=run Open=run

The pump is now ready to operate according to the defaults listed above.

All operating parameters may be changed by means of key-presses. See 14 Manual
operation.

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 19

Do not use auto-restart for more than 10 starts per hour.
We recommend remote control where a high number of
starts is required.

S, U, Du 13 Auto-restart facility

Auto-restart will restart the pump after mains power interruptions. The pump will re­turn to its previous operating state. To install auto-restart:

 Mains power must be available to the pump to engage auto-restart.
 Stop the pump. Turn off the mains power switch at the rear of the pump.
 Hold down the START key and turn the mains power switch on. The ! symbol

will show on the display.

 Start the pump. If the mains supply is interrupted the pump will automatically

restart when the mains power returns.

 Auto-restart is retained while the pump is switched off.
 To remove auto-restart switch off the mains power at the rear of the pump. Hold

down the STOP key and turn the mains power switch on. The ! symbol will go
out.

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 20

14 Manual operation

 You can adjust the speed on the display while the

pump is stopped or running.

 Use the UP key to increase the set speed. Use the

DOWN key to reduce the set speed. We recommend

that the speed is reduced to a minimum before start­ing the pump.

 The 323E increments in steps of 5rpm. The 323S,

323U and 323Du increment in steps of 1rpm.

 Press the DIRECTION key to reverse the direction of

rotation.

 The direction is shown by the rotation symbol. The di-

rection may be changed while the pump is stopped or
running.

 Start the pump with the START key.
 The rotation symbol will move to confirm that the pump is operating. The sym-

bol is static when the pump is stopped.

 Stop the pump with the STOP key. The pump will stop immediately.
 The display will continue to show the previous speed and direction. The pump

will return to this speed when the START key is pressed again.

 You can reduce the pump speed to 0 rpm with the DOWN key. The pump is still

in the running state and the rotation symbol will continue to move. Press the UP
key to return the pump to the minimum speed.

E, S, U, Du

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 21

15 Keypad lock

 The keypad can be locked to prevent changes to pump speed or other settings,

and make it possible only to start or stop the pump. The padlock symbol will
show on the display.

 Set the pump running. Hold down the START key for more than 2 seconds to

lock the keypad. The padlock symbol will show and only the START and STOP
key will function.

 The keypad may also be locked while the pump is stopped. Hold down the STOP

key for more than 2 seconds. The padlock symbol will show. The pump will start
and stop but the speed and direction will be locked.

 To unlock the keypad while the pump is running hold down the START key for a

further 2 seconds. The padlock symbol is removed. If the pump is stopped hold
down the STOP key until the padlock symbol is removed.

S, U, Du

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 22

16 MemoDose

The pump can dispense a set quantity or dose of fluid each time the key is pressed.
This is the MemoDose facility.

Set the pump
speed and direc­tion. Place a suit­able measuring
container at the
outlet and
START the pump.

When the required vol­ume of fluid has been
dispensed, press the
STOP key twice within
half a second. This
starts the MemoDose
feature.

The pump has made a record of the fluid it has just dispensed.
You may now repeat this dose or adjust the quantity as required.
The display will show “dos“ for 3 seconds. Then the display will
change to show 100%.

S, U, Du

Measure the quantity of fluid which has been dispensed. If the quantity is
correct press START to repeat the dose.

If the initial dose is larger than required use
the DOWN key to reduce the volume %
showing on the display. This will reduce the
next dose to be dispensed by the pump.

If the initial dose was smaller than
required use the UP key to increase
the next dose to be dispensed by
the pump.

Press START. The pump will dispense the new dose
and the display will count down as this dose proceeds.
The pump will stop when the new dose is complete.

Measure the new dose. If it is correct you may now
repeat this dose as often as required. The keypad
lock can be used to prevent further changes.

Use the UP and DOWN keys to further adjust the
dose until the correct quantity is obtained. You may
adjust the dose size down to 1% or up to 999%

Press the STOP key twice within half a second to exit MemoDose
and return to manual operation.

Notes

You must exit MemoDose to change pump speed and direction. But you may return
to MemoDose and keep the present dose size. To retain the MemoDose value through
a power interruption the pump must be in auto-restart.

 Press STOP twice to exit MemoDose and return to manual operation.
 Do not start the pump. Adjust the speed and direction showing on the display.
 Press STOP twice within half a second to return to MemoDose. The display will

show the previous % dose size. The pump will dose at the new speed and direc­tion.

 MemoDose doses can be triggered remotely. See 17.1 Analogue signals and re-

mote control.

Always check the dose size when changing pump tubes, fluid, or any connecting
pipework.

17 Automatic operation with
analogue signals, remote control,
or RS232 link

The pump will normally revert to manual control when it is switched on and display
the present pump speed.

Check that the pump is ready to run before selecting automatic operation. Remote
control signals may start the pump without warning.

Press the MODE key to select automatic operation. The pump will respond to the
analogue and (323Du only) RS232 signal as soon as analogue is selected. The UP and
DOWN keys will be disabled. Re-press the MODE key to return to manual control.
The pump will return to the last set manual state, speed and direction.

In an emergency press the STOP key. The pump will return directly to manual con­trol and stop.

Auto-restart will retain automatic operation while the pump is switched off.

Mode keypress

323E, 323S 323U 323Du

mode

mode

mode

mode

mode

mode

Manual speed
control

Manual speed
control

Manual speed
control

Analogue
control

Analogue
control

Return to
manual speed
control

Return to
manual speed
control

Return to
manual speed
control

RS232 control

Pressing the MODE key
on 323E and 323S will
display “man” for two
seconds then return to
current set speed

U, Du

E, S, U, Du

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 23

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 24

U, Du 17.1 Analogue signals and

remote control

Pump starting and direction may be remotely controlled by switches, and speed by
analogue signals, connected to the 25-way D connector at the rear of the pump. The
analogue interface will accept either 0-10 VDC or 4-20 mA signals.

To select analogue operation press the MODE key until “ana” is showing in the dis­play. The AUTO icon will show on the display.

Pump speed will increase with an increasing analogue signal. The pump will be
stopped at 0V or 4mA. This interface is pre-calibrated at the factory and may not be
altered. If the analogue signal is too high the pump will display an error message
“E21” (Over signal). See 19 Error messages.

The remote stop/start input works with both manual and analogue control
modes. The remote direction input works only with analogue control mode.

Never apply mains voltage to the 25-way D socket.
Apply the correct signals to the pins shown below. Limit
signals to the maximum values shown. Do not apply
voltage across other pins. Permanent damage, not

covered by warranty, may result.

Analogue voltage signal pins 4 and 14
Input impedance 200 kohms
Maximum voltage signal 10V

Analogue current signal pins 4 and 14
link 3 and 15
Input impedance 250 ohms
Maximum current signal 20mA

Speed control

Stop/Start

A remote stop/start switch may be connected between pins 7 and 17 of the 25 pin
socket. Or a TTL compatible logic signal may be applied to pin 7. (Low 0V High 5V
maximum. Ground to pin 17). This is available in manual and analogue operation.

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 25

To invert the stop/start action of the switch or TTL compatible signal:

 Turn off the mains power switch at the rear of the pump.
 Hold down the STOP and DIRECTION keys. Turn on the mains power switch.
 The display will show the present signal setting; RS for factory default response

or IRS for inverted signal response.

 Press the UP or DOWN key to reverse the present setting.
 Press the START key to set the signal response and return to manual operation.

Signal response Switch TTL compatible signals

Factory default (RS) Open = start pump High 5V = start pump

Inverted (IRS) Open = stop pump High 5V = stop pump

Manual operation with a remote stop/start switch

If you invert the operation of the remote stop/start switch you must connect a wire
link from pin 7 to 17 to be able to start the pump from the keypad. This diagram
shows the combined effects of the remote switch and the pump keypad.

If STOP is pressed the remote stop/start switch will have no effect.

Direction input (analogue control mode only)

Connect remote direction switch between pins 5 and 17. Also link pins 6 and 18 to en­able remote direction control. The UP and DOWN keys on the pump will be disabled.
Open switch for clockwise rotation, close switch for counter-clockwise rotation. With
no connection, the pump will default to clockwise rotation. Or a TTL compatible logic
signal may be applied to pin 5. (Ground to pin 17). High (5V maximum) for clockwise
rotation. Low (0V) for counter-clockwise rotation.

You cannot invert the remote direction signal.

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 26

Speed

A remote potentiometer may be connected to control
the pump speed. Use a potentiometer of between 1K
and 10KOhms, with a minimum power of 0.25W. Con­nect the potentiometer as shown. Set the pump to ana­logue control. Do not apply another voltage or current
control signal while using a remote potentiometer.

MemoDose

A Watson-Marlow remote control footswitch or
handswitch may be used to start the dose. The dose will
proceed once the switch is pressed. In an emergency
press the STOP key to stop the dose. The switch should
be connected as shown. Or a TTL compatible logic sig­nal may be applied to pin 8. (Low 0V High 5V maxi­mum. Ground to pin 9).

17.2 RS232 serial link

The RS232 interface will give basic pump control by serial link to the 9-way D con­nector at the rear of the pump.

To select RS232 serial control, repeat MODE key press until “dig” is showing in the
display. Any analogue signals, or remote control inputs, applied to the 25-way D con­nector will be ignored.

The 323Du version of the serial interface provides a direct link to a single pump. The
pump has no unique address but the software requires a pump identification of 1.

Du

Never apply mains voltage to the 9-way D connector.
Only RS232 signals may be applied to pins 2,3,5 and 8.
Do not apply voltage across other pins. Permanent dam­age, not covered by warranty, may result.

Connections for
RS232 signals
(viewed from in­side the pump in­terface plug)

Use only twin shielded RS232
cables for interconnections.

Network cable, RS232:
product code: 059.3121.000

9

8

Reserved

Shell Shell Shell Shell

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 27

RS232 settings

Baud 9600

Stop bits 2

Data bits 8

Parity None

Flow control None

Echo On

Pump inteface
pin

Function

1 ­2 RX (Receive data)

3

TX (Transmit
data)

4 ­5 GND (Ground)
6 ­7 ­8 Reserved
9 -

RS232 command modes

These are the codes to control the pump with the RS232 serial link. They must be sent
to the pump from a computer serial port (or equivalent).

Com­mand

Function

Com­mand

Function

1SPxxx Set pump speed to xxx 1RC Reverse direction

1SI Increase speed by 1rpm 1RR Set clockwise direction

1SD Reduce speed by 1rpm 1RL

Set counter-clockwise
direction

1GO Start pump 1RS Show all pump information

1ST Stop pump 1ZY

Show running status of the
pump. STARTed 1 or
STOPped 0

Always terminate each command with a RETURN (ASCII CHR13).

Notes on control codes

There should be at least 10mS between commands.

The command RS to show all pump information will return the following text string:

[pump type] [speed] [CW / CCW rotation] [stopped/running, 0 /1] [! delimiter]
e.g. 323Du 110 CW 1 !

Note: both 9 and 25-way D shells are earthed.

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 28

18 Care and maintenance

The pump is sealed to IP31 and is suitable for wipe down cleaning. Do not use sol­vents, mechanical scourers, strong organic acids, or alkali based cleaning solutions.

Remove any tubing, detach the pumphead, and wash the pumphead thoroughly with
a mild solution of detergent in water.

Check moving parts of the rotor from time to time for freedom of movement. Lubri­cate pivot points and rollers occasionally with Teflon lubricating oil.

The pump has a good, broad chemical resistance to inorganic acids, saline solutions,
alkalis, some hydrocarbons and a large number of oils and greases. It is suitable for
wipe down but not for long term contact with alcohols. The case may be damaged by
contact with strong acids or strong solvents

There are no user serviceable parts inside the pump. The unit should be returned to
Watson-Marlow or its appointed agents or distributors for service.

19 Troubleshooting

If the pump display remains blank when the pump is on, make the following checks:

 Check the position of the voltage selector switch at the rear of the pump.
 Check the mains power switch at the rear of the pump.
 Check that mains power is available to the pump.
 Check the fuse in the fuse drawer of the IEC mains power connector at the rear

of the pump.

 Check the fuse in the mains power plug if one is present.

If the pump runs but there is little or no flow, make the following checks:

 Check that the tube and rotor are in the pumphead.
 Check that fluid is supplied to the pump.
 Check that the tube is not split or burst.
 Check for any kinks or blockages in the lines.
 Check that any valves in the lines are open.
 Check that the correct wall-thickness tube is being used.
 Check direction of rotation.
 Check that the rotor is not slipping on the drive shaft.

If trouble persists, technical assistance for this product is available from your
distributor or Watson-Marlow Ltd, Falmouth TR11 4RU, United Kingdom.

E, S, U, Du

E, S, U, Du

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 29

19.1 Error messages

If a fault condition is detected the pump will stop. All keys will be disabled. The dis­play will show the error number:

Error Error condition Suggested action

0 RAM write error

Attempt to reset by switching power OFF / ON.
Or seek support

1 RAM corruption

Attempt to reset by switching power OFF / ON.
Or seek support

2

OTP ROM error /
corruption

Attempt to reset by switching power OFF / ON.
Or seek support

3

OTP ROM read
error

Attempt to reset by switching power OFF / ON.
Or seek support

5

Unknown pump
type

Check the interface card and cables. Attempt to
reset by switching power OFF / ON. Or seek support

7 Display failure Seek support

8 Wrong key-press

Attempt key-press again. Attempt to reset by
switching OFF / ON

9 Motor stalled

Stop pump immediately. Check pumphead and
tube. Power OFF/ON may reset. Or seek support

10 Tacho fault

Stop pump immediately. Power OFF/ON may reset.
Or seek support

14 Over speed

Stop pump immediately. Power OFF/ON may reset.
Or seek support

15 Over current

Stop pump immediately. Check system. Power
OFF/ON may reset. Or seek support

16 Over voltage

Stop pump immediately. Check mains voltage se­lector switch. Check supply. Power OFF/ON may
reset. Or seek support

17 Under voltage

Stop pump immediately. Check mains voltage se­lector switch. Check supply. ON/OFF may reset. Or
seek support

18 Watchdog error

Attempt to reset by switching power OFF / ON.
Or seek support

19 Over temperature Stop pump immediately. Turn OFF. Seek support

20

Signal out of
range

Check analogue control signal range. Trim signal as
required. Or seek support

21 Over signal Reduce the analogue control signal

22 No signal

Connect analogue control signal or return to manual
control

25

Network not
detected

Turn OFF. Check network and connections. Or seek
support

26 RS232 fault

Turn OFF. Check network and connections. Or seek
support

27 RS232 lost

Turn OFF. Check network and connections. Or seek
support

33

Unrecognised
keypress

Attempt keypress again. Attempt to reset by
switching power OFF/ON. Otherwise seek support.

35 Work overload

Turn OFF. Check power supply. Check pumphead
and tubing. Wait 30 minutes. Power ON may reset.
Otherwise seek support.

ERR

General error
condition

Turn OFF. Seek support

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 30

E, S, U, Du

E, S, U, Du

20 Drive maintenance

There are no user serviceable parts inside the pump. The unit should be re­turned to Watson-Marlow or its appointed agents or distributors for
service.

21 Drive part numbers

Drives only

Part number Drive type Drive speed Pumphead

Mains lead

type

036.3124.00U 323E 400 N/A UK

036.3132.00U 323S 220 N/A UK

036.3134.00U 323S 400 N/A UK

036.3142.00U 323U 220 N/A UK

036.3144.00U 323U 400 N/A UK

036.3152.00U 323Du 220 N/A UK

036.3154.00U 323Du 400 N/A UK

Complete pump assemblies

Part number Drive type Drive speed Pumphead

Mains lead

type

030.3124.3DU 323E 400 313D UK

030.3132.RLU 323S 220 501RL UK

030.3134.3DU 323S 400 313DW UK

030.3142.RLU 323U 220 501RL UK

030.3144.3DU 323U 400 313DW UK

030.3152.RLU 323Du 220 501RL UK

030.3154.3DU 323Du 400 313DW UK

For US mains lead, replace ‘U’ with ‘A’ at end of part number.
For European mains lead, replace ‘U’ with ‘E’.

UEA

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 31

E, S, U, Du 22 Drive spares

Spare Description

1 MNA2042A

313 and MC bayo­net mounting plate
(400 rpm models
only)

2 MN2056M

E and S interface
card cover

3 MN2094T

U interface card
cover

4 MN2095T

Du interface card
cover

5 FB0009 Foot
6 FS0003 Fuse

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 32

23 Pumpheads

23.1 Pumpheads: key safety information

Before opening the pumphead track please
ensure that the following safety directions are
followed.



Ensure that the pump is isolated from mains voltage.

 Ensure that there is no pressure in the pipeline.
 If a tube failure has occurred, ensure that any product in the pumphead has

been allowed to drain to a suitable drain.

 Ensure that protective clothing and eye protection are worn if hazardous prod-

ucts are being pumped.

23.2 313D and 314D pumpheads

E, S, U, Du

The 313D pumphead has three rollers and is designed to provide higher flow rates.
The 314D pumphead has four rollers to provide greater pumping precision with less
pulsation in the flow. Both designs are available for 1.6mm and 2.4mm wall tubes.

New tubing can be loaded easily into the flip top design. The top closes with a “clamp
and stretch” action to locate the tube in the correct position and with the correct ten­sion.

Standard and extension pumpheads are bayonet mounted. This ensures easy clean­ing and fast set up.

Tube selection

The chemical compatibility list published in the Watson-Marlow web site is only a
guide. If in doubt request a tube sample card for immersion trials.

314D pumpheads should run no faster than 300 rpm
when in continuous use. Speeds up to 400 rpm are per­missible for intermittent use.

E, S400,

U400, Du400

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 33

Installation

323 400 rpm drives (shown) have an integral mounting plate to attach a 313 or 314
pumphead.

Engage the pumphead drive slot with the end of the pump drive shaft. Continue to
align the pumphead until the bayonet engages with the mounting plate. Turn the
pumphead clockwise until it locks into an upright position.

Removal

Push the locking lever back and turn the pumphead anti-clockwise until it is free from
the mounting plate.

Tube loading

Switch off the pump before tube loading. Lift the “flip top” track until fully open.

Set the tube clamps to the correct
tube size. The track must be fully
open. Align the scale on both sides of
the pumphead.

If the tube is dirty, or there is a high suction lift, the tube clamps may need a smaller
setting to secure the tube.

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 34

 Select enough tube length for the curve of the pump track. Slide the tube into

the open pumphead. The tube must not be twisted or stretched against the
rollers.

 Ensure the tubing locates in the centre of the tube clamps. Carefully lower the

track. Check that the tube is not crushed in the clamps or over stretched.

When using Marprene tubing

Re-tension new tube after the first 30 minutes of running. Stop the pump. Release the
flip top. Allow the tube to resettle naturally across the rollers. Re-clamp the tube. Re­start the pump. This will correct the normal stretching that occurs with new Marprene
tube. The correct tension is essential for good tube life.

23.3 313D and 314D pumphead
order codes

Spare Description

1 033.3411.000 313D three-roller pumphead

2 033.3431.000 313X extension three-roller pumphead

1 033.4411.000 314D four-roller pumphead

2 033.4431.000 314X extension four-roller pumphead

1 033.3511.000 313D2 three-roller pumphead for 2.4mm tube

2 033.3531.000

313X2 extension three-roller pumphead for 2.4mm
tube

1 033.4511.000 314D2 four-roller pumphead for 2.4mm tube

2 033.4531.000 314X2 extension four-roller pumphead for 2.4mm tube

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 35

23.4 313D and 314D flow rates

Flow rates were obtained using silicone tubing with the pumphead rotating clockwise,
pumping water at 20°C with zero suction and delivery pressures. For critical applica­tions determine flow rates under operating conditions.

Flow rates, 313D, 1.6mm wall (ml/min)

bore

mm 0.5 0.8 1.6 3.2 4.8 6.4 8.0

in 1/50 1/32 1/16 1/8 3/16 1/14 5/16

# 112 13 14 16 25 17 18

15-400 rpm
3-400 rpm

1.5-220 rpm

0.45-12

0.09-12

0.05-6.6

1.1-28

0.21-28

0.11-15

4.1-110

0.81-110

0.41-59

15-400

3.0-400

1.5-220

33-880

6.6-880

3.3-480

54-1400
11-1400

5.4-790

75-2000
15-2000

7.5-1100

Flow rates, 314D, 1.6mm wall (ml/min)

bore

mm 0.5 0.8 1.6 3.2 4.8 6.4 8.0

in 1/50 1/32 1/16 1/8 3/16 1/14 5/16

# 112 13 14 16 25 17 18

15-400 rpm
3-400 rpm

1.5-220 rpm

0.45-12

0.09-12

0.05-6.6

0.90-24

0.18-24

0.09-13

3.8-100

0.75-100

0.38-55

13-340

2.6-340

1.3-190

29-760

5.7-760

2.9-420

45-1200

9.0-1200

4.5-660

60-1600
12-1600

6.0-880

Note: 314D pumpheads should run no faster than 300 rpm when in continuous use.
Speeds up to 400 rpm are permissible for intermittent use.

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 36

23.5 313D and 314D: maximum number
of pumpheads

313D, 314D Pumpsil, 0-0.5 bar

bore

mm 0.5 0.8 1.6 3.2 4.8 6.4 8.0

in 1/50 1/32 1/16 1/8 3/16 1/14 5/16

# 112 13 14 16 25 17 18

220/400 rpm 6 6 5 3 2 2 1

313D, 314D Pumpsil, 0.5-2 bar

bore

mm 0.5 0.8 1.6 3.2 4.8 6.4 8.0

in 1/50 1/32 1/16 1/8 3/16 1/14 5/16

# 112 13 14 16 25 17 18

220/400 rpm 6 6 5 3 2 1 1

313D, 314D Marprene, Bioprene, Tygon, Neoprene, Fluorel, 0-2 bar

bore

mm 0.5 0.8 1.6 3.2 4.8 6.4 8.0

in 1/50 1/32 1/16 1/8 3/16 1/14 5/16

# 112 13 14 16 25 17 18

220/400 rpm 6 6 4 2 2 1 1

313D, 314D STA-PURE, CHEM-SURE, 0.5-2 bar

bore

mm 1.6 3.2 4.8 6.4 8.0

in 1/16 1/8 3/16 1/14 5/16

# 14 16 25 17 18

220/400 rpm 1 1 1 1 1

313D2, 314D2 Pumpsil, Marprene, Bioprene, Tygon, Neoprene, Fluorel,
STA-PURE, CHEM-SURE, 0-2 bar

bore

mm 0.5 0.8 1.6 3.2 4.8 6.4 8.0

in 1/50 1/32 1/16 1/8 3/16 1/14 5/16

# 112 13 14 16 25 17 18

220/400 rpm 1 1 1 1 1 1 1

Note: 314D pumpheads should run no faster than 300 rpm when in continuous use.
Speeds up to 400 rpm are permissible for intermittent use.

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 37

23.6 313D and 314D:
tubing part numbers

1.6mm tube

mm in # Marprene Bioprene CHEM-SURE Pumpsil

0.5 1/50 112 902.0005.016 903.0005.016 913.A005.016

0.8 1/32 13 902.0008.016 903.0008.016 913.A008.016

1.6 1/16 14 902.0016.016 903.0016.016 965.0016.016 913.A016.016

3.2 1/8 16 902.0032.016 903.0032.016 965.0032.016 913.A032.016

4.8 3/16 25 902.0048.016 903.0048.016 965.0048.016 913.A048.016

6.4 1/4 17 902.0064.016 903.0064.016 965.0064.016 913.A064.016

8.0 5/16 18 902.0080.016 903.0080.016 965.0080.016 913.A080.016

1.6mm tube

mm in # PVC Fluorel Neoprene STA-PURE

0.8 1/32 13 920.0008.016

1.6 1/16 14 950.0016.016 970.0016.016 920.0016.016 960.A016.016

3.2 1/8 16 950.0032.016 970.0032.016 920.0032.016 960.A032.016

4.8 3/16 25 950.0048.016 970.0048.016 920.0048.016 960.A048.016

6.4 1/4 17 950.0064.016 970.0064.016 920.0064.016 960.A064.016

8.0 5/16 18 950.0080.016 970.0080.016 920.0080.016 960.A080.016

2.4mm tube

mm in # Marprene Bioprene Pumpsil

0.5 1/50 105 913.0005.024

0.8 1/32 108 913.0008.024

1.6 1/16 119 902.0016.024 903.0016.024 913.0016.024

3.2 1/8 120 902.0032.024 903.0032.024 913.0032.024

4.8 3/16 15 902.0048.024 903.0048.024 913.0048.024

6.4 1/4 24 902.0064.024 903.0064.024 913.0064.024

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 38

23.7 314MC and 318MC microcassette
pumpheads

S400, U400,

Du400

314MC and 318MC pumpheads must not run at speeds
greater than 110 rpm.

Each pumphead offers five pumping channels, and the manifold tubing is preloaded
in removable cassettes. The 314MC pumphead has four rollers and is designed to
provide higher flow rates. The 318MC pumphead has eight rollers for higher pump­ing precision with less pulsation.

Each cassette will accept any one of nineteen tube sizes available. Adjacent cassettes
may contain different types or size of tubing.

New tube loads easily in the cassette design. Cassettes locate quickly with a single
cam lever action that also controls roller pressure against the tube.

Extension pumpheads may be added up to 10 channels. All are bayonet mounted for
easy cleaning and fast set up.

Tube selection

The chemical compatibility list published in the Watson-Marlow web site is only a
guide. If in doubt request a tube sample card for immersion trials.

Installation

323 400 rpm drives (shown) have an integral mounting plate to attach a 314MC or
318MC pumphead.

Engage the pumphead drive slot with the end of the pump drive shaft. Continue to
align the pumphead until the bayonet engages with the mounting plate. Turn the
pumphead clockwise until it locks into an upright position.

Removal

Push the locking lever back and turn the pumphead anti-clockwise until it is free from
the mounting plate.

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 39

Tube loading

Tube size is identified by the colour of the three collars.

These collars divide the manifold tube element into two alternative pumping seg­ments. Either segment may be fitted in the pump cassette and this doubles the work­ing life obtained from each manifold tube element.

Tube elements should be inspected regularly, and moved to their second segment,
prior to failure. Ensure the tubing has not bonded to the cassette track. Check the
whole tube surface within the cassette.

 Move the cam lever over to unlock the cassette. Lift the cassette from the track

and remove any tubing.

 Slot one end of the new tubing segment into a cassette leg. Slot the other end

of the tubing segment into the other cassette leg. The collars must be outside
the cassette legs. Slide the tubing evenly down into the slots. Do not twist the
tube or use unnecessary force.

 Slip the collars past the retaining fingers and ensure the tubing has reached the

bottom of the slots. Carefully pull the tube in towards the cassette to fix the col­lars in position.

 Drop the loaded cassette into the pumphead. Cassettes will fit in the pumphead

in either direction and we recommend they are all fitted in the same direction.

 Push the cassette down until the cassette legs will hook into the pumphead

body. Ensure the tube has settled naturally into the cassette track and is not
pinched by the edge of the cassette.

 Flip the cam lever upright to lock the cassette in the pumphead.
 The cam lever controls the occlusion of the tube against the rollers. To pump

against higher pressure the cam lever may be moved beyond the vertical posi­tion. Tube life will be shortened and drive torque will be increased. This will re­duce the number of cassettes that may be fitted to the pump.

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 40

23.8 314MC and 318MC microcassette
pumphead spares

Spare Description

1 033.6453.000 314MC four roller five channel pumphead

1 033.6454.000 314MCX four roller five channel extension pumphead

1 033.6853.000 318MC eight roller five channel pumphead

1 033.6854.000 318MCX eight roller five channel extension pumphead

2 MNA0286A Micro cassette

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 41

23.9 314MC and 318MC flow rates

Flow rates were obtained using silicone tubing with the pumphead rotating clockwise,
pumping water at 20°C with zero suction and delivery pressures. For critical applica­tions determine flow rates under operating conditions. The important factors are suc­tion and delivery pressure, temperature, and fluid viscosity. Tube life will be reduced
when pumping against pressure.

Flow rates, 314MC (ml/min)

Tube code Bore 3 rpm 15 rpm 110 rpm
orange/black 0.13mm /0.005in 0.002 0.01 0.09
orange/red 0.19mm /0.007in 0.008 0.04 0.30
orange/blue 0.25mm /0.010in 0.01 0.07 0.50

orange/green 0.38mm /0.015in 0.03 0.13 0.90

orange/yellow 0.50mm /0.020in 0.05 0.23 1.7

orange/white 0.63mm /0.025in 0.08 0.42 3.1

black/black 0.76mm /0.030in 0.13 0.63 4.6

orange/orange 0.88mm /0.035in 0.17 0.87 6.4

white/white 1.02mm /0.040in 0.22 1.1 8.1

red/red 1.14mm /0.045in 0.27 1.4 9.9

grey/grey 1.29mm /0.050in 0.35 1.8 13

yellow/yellow 1.42mm /0.055in 0.46 2.3 17

yellow/blue 1.52mm /0.060in 0.52 2.6 19

blue/blue 1.65mm /0.065in 0.60 3.0 22

green/green 1.85mm /0.070in 0.76 3.8 28

purple/purple 2.05mm /0.080in 0.90 4.5 33

purple/black 2.29mm /0.090in 1.1 5.5 40

purple/orange 2.54mm /0.100in 1.3 6.4 47

purple/white 2.79mm /0.110in 1.4 7.2 53

Flow rates, 318MC (ml/min)

Tube code Bore 3 rpm 15 rpm 110 rpm
orange/black 0.13mm /0.005in 0.002 0.01 0.09
orange/red 0.19mm /0.007in 0.008 0.04 0.30
orange/blue 0.25mm /0.010in 0.01 0.06 0.50

orange/green 0.38mm /0.015in 0.02 0.11 0.80

orange/yellow 0.50mm /0.020in 0.04 0.19 1.4

orange/white 0.63mm /0.025in 0.07 0.35 2.6

black/black 0.76mm /0.030in 0.11 0.53 3.9

orange/orange 0.88mm /0.035in 0.14 0.72 5.3

white/white 1.02mm /0.040in 0.18 0.90 6.6

red/red 1.14mm /0.045in 0.24 1.2 8.8

grey/grey 1.29mm /0.050in 0.27 1.4 10

yellow/yellow 1.42mm /0.055in 0.33 1.6 12

yellow/blue 1.52mm /0.060in 0.38 1.9 14

blue/blue 1.65mm /0.065in 0.46 2.3 17

green/green 1.85mm /0.070in 0.55 2.7 20

purple/purple 2.05mm /0.080in 0.65 3.3 24

purple/black 2.29mm /0.090in 0.79 4.0 29

purple/orange 2.54mm /0.100in 0.90 4.5 33

purple/white 2.79mm /0.110in 0.98 4.9 36

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 42

23.10 314MC and 318MC tubing part
numbers

Tube code Bore Marprene* PVC Pumpsil
orange/black 0.13mm /0.005in 981.0013.000
orange/red 0.19mm /0.007in 981.0019.000

orange/blue 0.25mm /0.010in 979.0025.000 981.0025.000
orange/green 0.38mm /0.015in 979.0038.000 981.0038.000

orange/yellow 0.50mm /0.020in 979.0050.000 981.0050.000

orange/white 0.63mm /0.025in 979.0063.000 981.0063.000 983.0063.000

black/black 0.76mm /0.030in 979.0076.000 981.0076.000 983.0076.000

orange/orange 0.88mm /0.035in 979.0088.000 981.0088.000 983.0088.000

white/white 1.02mm /0.040in 979.0102.000 981.0102.000 983.0102.000

red/red 1.14mm /0.045in 979.0114.000 981.0114.000 983.0114.000

grey/grey 1.29mm /0.050in 979.0129.000 981.0129.000 983.0129.000

yellow/yellow 1.42mm /0.055in 979.0142.000 981.0142.000 983.0142.000

yellow/blue 1.52mm /0.060in 979.0152.000 981.0152.000 983.0152.000

blue/blue 1.65mm /0.065in 979.0165.000 981.0165.000 983.0165.000

green/green 1.85mm /0.070in 979.0185.000 981.0185.000 983.0185.000

purple/purple 2.05mm /0.080in 979.0205.000 981.0205.000 983.0205.000

purple/black 2.29mm /0.090in 979.0229.000 981.0229.000 983.0229.000

purple/orange 2.54mm /0.100in 979.0254.000 981.0254.000 983.0254.000

purple/white 2.79mm /0.110in 979.0279.000 981.0279.000 983.0279.000

* Autoclavable tubing: Marprene tubes fitted with suitable collars are available for
autoclaving applications. Please replace the the last “0” of the product code with “+”.
For example: 979.0238.00+. Pumpsil tubing is suitable for autoclaving but standard
Marprene tube collars are not suitable because they separate from the tube at high
temperatures.

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 43

23.11 501RL pumphead

The 501RL and 501RL2 pumpheads are suitable for tubing with internal diameters up
to 8.0mm. The 501RL is set during manufacture for use with 1.6mm wall tubing and
501RL2 is set for 2.4mm wall tubing.

The spring-loaded rollers give extended tube life. The pumphead can be run clock­wise, for best tube life, or anticlockwise for higher pressures. The “tool lockable”
guard should be locked shut while the pump is in use.

23.12 501RL and 501RL2 installation

The 501RL track will fit on the drive in three orientations. Secure the track with the
locating screw.

The rotor grips the drive shaft via a split collet. Ensure the drive shaft is degreased
before fitting the rotor. This will prevent the rotor slipping on the drive shaft during
operation. Tighten the rotor screw to a torque of 3Nm.

The track and rotor may be removed from the pump for cleaning or to reposition the
track on the pump.

There is a drive pin inside the rotor collet to engage with the end of the drive shaft.
To keep this pin correctly engaged on the drive shaft, we recommend that the collet
remains on the shaft, while the rotor is removed. Hold the rotor firmly and remove
the rotor retaining screw. Pull the rotor from the drive shaft leaving the collet on the
drive shaft. Remove the track locating screw. You may remove the track or rotate to
the new position. Align the track and refit the track locating screw. Refit the rotor.

23.13 501RL and 501RL2 tube loading

Switch off the mains supply. Unlock and open the pumphead guard.

Select a minimum length of 240mm of tubing. Fit one end of the tubing into a clamp.

The rotor has tube guide rollers that pull the tube into the pumphead during loading.
Turn the rotor carefully until the tube guides pick up the tube. Continue to turn the
rotor, and feed the tubing in between the guides.

When the tube has gone round the pump track fit the other end of the tubing into the
clamp. Check that the tubing has fitted naturally against the track for best tube life.
Release the clamps and adjust the tubing if it is slack, twisted, or stretched.

S220, U220,

Du220

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 44

The tube clamps can accommodate various tube diameters by pushing in, or pulling
out, the grip bars within the clamp. Set the clamps to apply the minimum necessary
pressure to the tubing.

Restart the pump. Free the downstream clamp for a short time, while the pump is
running, so that the tube can find its natural length. Please keep fingers clear of the
moving rotor. Shut and lock the guard after adjusting the tube.

When using Marprene tubing

Re-tension new tube after the first 30 minutes of running. Stop the pump and release
the tube clamp at the outlet of the pump. Pull any slack tube from the pumphead and
re-clamp the tube. Re-start the pump. This will correct the normal stretching that oc­curs with new Marprene tube. The correct tension is essential for good tube life.

23.14 501RL and 501RL2 rotor settings

The 501RL and 501RL2 pumpheads are factory set to give optimum tube life with
Watson-Marlow tubing. We recommend that the rotors are not adjusted or that other
types of tubing are not used.

If the rotor needs re-aligning we recommend the rotor is returned to Watson-Marlow
for correct adjustment. Or contact our technical department for further information.

Check moving parts of the rotor from time to time for freedom of movement. Lubri­cate pivot points and rollers occasionally with Teflon lubricating oil.

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 45

23.15 501RL and 501RL2 pumphead
spares

Spare Description

053.0001.L00 501RL complete pumphead

053.0001.L20 501RL2 complete pumphead

1

SG001
SG002

Springs for 501RL (blue)
Springs for 501RL2 (red)

2 MN0012T Follower roller

3 MN0011T Main roller

4 MNA0143A 501RL rotor assembly

5 CL0656T Collet

6 FN4502 Lock

7 MN0377M Lockable guard

8 MN0266M Hinge

9 FN2341 Hinge screw

10 MNA0114A Tube clamp assembly

11 FN2332 Screw

- XX0095 Teflon lubricant

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 46

23.16 501RL and 501RL2 flow rates

Flow rates were obtained using silicone tubing with the pumphead rotating clockwise,
pumping water at 20°C with zero suction and delivery pressures. For critical applica­tions determine flow rates under operating conditions. The important factors are suc­tion and delivery pressure, temperature and fluid viscosity. Tube life will be reduced
when pumping against pressure.

Flow rates, 501RL, 1.6mm wall, 501RL2, 2.4mm wall (ml/min)

bore

mm 0.5 0.8 1.6 3.2 4.8 6.4 8.0

in 1/50 1/32 1/16 1/8 3/16 1/14 5/16

# 112 13 14 16 25 17 18

1.5-220 rpm 0.06-9.2 0.18-27 0.64-94 2.8-410 6.1-890 9.5-1400 15-2200

23.17 501RL and 501RL2:
tubing part numbers

1.6mm tube for 501RL pumpheads

mm in # Marprene Bioprene CHEM-SURE Pumpsil

0.5 1/50 112 902.0005.016 903.0005.016 913.A005.016

0.8 1/32 13 902.0008.016 903.0008.016 913.A008.016

1.6 1/16 14 902.0016.016 903.0016.016 965.0016.016 913.A016.016

3.2 1/8 16 902.0032.016 903.0032.016 965.0032.016 913.A032.016

4.8 3/16 25 902.0048.016 903.0048.016 965.0048.016 913.A048.016

6.4 1/4 17 902.0064.016 903.0064.016 965.0064.016 913.A064.016

8.0 5/16 18 902.0080.016 903.0080.016 965.0080.016 913.A080.016

1.6mm tube for 501RL pumpheads

mm in # PVC Fluorel Neoprene STA-PURE

0.8 1/32 13 920.0008.016

1.6 1/16 14 950.0016.016 970.0016.016 920.0016.016 960.0016.016

3.2 1/8 16 950.0032.016 970.0032.016 920.0032.016 960.0032.016

4.8 3/16 25 950.0048.016 970.0048.016 920.0048.016 960.0048.016

6.4 1/4 17 950.0064.016 970.0064.016 920.0064.016 960.0064.016

8.0 5/16 18 950.0080.016 970.0080.016 920.0080.016 960.0080.016

2.4mm tube for 501RL2 pumpheads
mm in # Marprene Bioprene Pumpsil

0.5 1/50 105 913.A005.024

0.8 1/32 108 913.A008.024

1.6 1/16 119 902.0016.024 903.0016.024 913.A016.024

3.2 1/8 120 902.0032.024 903.0032.024 913.A032.024

4.8 3/16 15 902.0048.024 903.0048.024 913.A048.024

6.4 1/4 24 902.0064.024 903.0064.024 913.A064.024

8.0 5/16 121 902.0080.024 903.0080.024 913.A080.024

Note: CHEM-SURE and STA-PURE are supplied in 305mm lengths.

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 47

24 Trademarks

Watson-Marlow, Bioprene, Pumpsil and Marprene are trademarks of Watson-Marlow
Limited.

Fluorel is a trademark of 3M.

Sta-Pure and Chem-Sure are trademarks of W.L.Gore and Associates.

25 Warning not to use pumps in
patient-connected applications

Warning: These products are not designed for use in, and should not be used for pa-

tient-connected applications.

26 Publication history

m-323e-s-u-du-gb-06.qxp: Watson-Marlow 323E, 323S, 323U and 323Du.

First published 01 02. Revised 01 08.

E, S, U, Du

E, S, U, Du

E, S, U, Du

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 48

27 Decontamination certificate

In compliance with the UK Health and Safety at Work Act and the Control of Sub­stances Hazardous to Health Regulations, you are required to declare the substances
which have been in contact with product(s) you return to Watson-Marlow or its sub­sidiaries or distributors. Failure to do so will cause delays. Please ensure that you fax
us this form and receive an RGA (Returned Goods Authorisation) before you despatch
the product(s). A copy of this form must be attached to the outside of the packaging
containing the product(s). Please complete a separate decontamination certificate for
each product. You are responsible for cleaning and decontaminating the product(s)
before return.

Your name Company

Address

Postcode/zip Country

Telephone Fax

Product type Serial number

To speed the re-

pair, please de-

scribe all

known faults

The product has ...

II Been used II Not been used

If the product has been used, please complete all the following sections.
If the product has not been used, please just sign this form.

Names of

chemicals handled

with product(s)

Precautions to be
taken in handling

these chemicals

Action to be taken

in the event of

human contact

I understand that the personal data collected will be kept confidentially
in accordance with the UK Data Protection Act 1998.

RGA number

Signature Your position

Date

Please print out, sign and fax to Watson-Marlow Pumps at [phone].

E, S, U, Du